Just a 'heads up' over this bit.Just lost the little bit of rubber that sits under the screw that supposedly holds the bottle cover on (note the 'supposedly' bit ) that stops it digging into the bottle.Not being one to spend out more on postage than a bit costs (besides which, it was a Sunday evening), looked round the house for something that 'would do the same job' - sort of, came across a tap washer and a single hole paper punch, now it's got a 'double' one fitted - though they've got a concave middle to them, think they'll do until I get somewhere to pick up an original bit.